i'm going to dream about that steak. i'm going to dream about that tiramisu. what a night, huh? but, um, can the test drive be over now? head back to the dealership? [ male announcer ] it's practically yours. but we still need your signature. volkswagen sign then drive is back. and it's never been easier to get a passat. that's the power of german engineering. get $0 down, $0 due at signing, $0 deposit, and $0 first month's payment on any new volkswagen. visit vwdealer.com today. >> shepard: federal agents spend a lot of time preparing to respond to attacks like the one we saw last weekend in newtown. but active shooters are just one of many scenarios for which they train under realistic conditions at a one of a kind facility in brunswick, georgia. steve harrigan is there tonight. steve? >> she basically built a miniature world here from which they can recreate a range of terrorist attacks. in brunswick, georgia, simulated subway cars are attacked with simulated nerve gas. >> y'all picked a bad day. >> active shooters enter bars and knife wielding assassins charge vips. attacks